I don't know the exact "cost", which may be too complicated to calculate it, including car,maintenance,gas,insurrance, even tickets.... " ~ H; G* ~5 ]1 t# c$ f 1 x9 I! g7 _+ p& m9 J- b$ TFor me, I think car-pool is just to share part of gas "cost" and have some fun on road..... & Q; e; h2 D, k + w1 r! A: {8 O9 zI usally charge passager 30 bucks for a trip.